Supported by:
Seven farmers in the North East of England are exploring how flowering habitats affect the distribution, diversity and abundance of pests’ natural enemies.
The farmers and researchers in this field lab will address key questions on how flowering habitats can benefit their commercial farm businesses by measuring the impact of establishment techniques and species mixtures on the diversity, abundance and behaviour of insect pests and their natural enemies.
Ultimately, the field lab will help farmers see if flower strips can help them reduce their use of insecticides, and provide robust, on-farm methodologies to support inclusion of these habitats on their farms.
Each trial site will include a flowering margin or in-field flowering strips. 100 m transects will be set out in each flowering habitat. Four assessment points will be used on each transect.
The following measurements will be taken on each site by participating farmers:
The field lab will measure the impact of establishment techniques and species mixtures on the diversity and abundance of natural enemies supported by flowering habitats on commercial farms. Ultimately, the field lab will help farmers see if flower strips can help them to reduce their use of insecticides.
This trial design and associated data collection will provide information on both the spatial and temporal diversity and abundance of flowering species and their associated beneficial insects. The field lab will also produce quantitative data on pest pressure (aphids) and associated crop observations (e.g. BYDV).
The assessments will serve a dual purpose; to provide a baseline quantitative dataset but also to provide farmers with practical ways of conducting their own on farm monitoring for the future.
100 m transects will be set out in each flowering habitat. Where the flowering habitats are field margins, or strips within the crop, additional transects will be completed 10 m into the field and 100 m into the field (the distance between the transects will be determined at the time of sampling depending on field size and the location of the flowering habitats). Four assessment points will be used on each transect.
The following measurements will be taken on each site by participating farmers:
- Plant species composition in the flowering habitat
- Predatory insects and pests - The predatory insects to be assessed in this trial (ground beetles, rove beetles, soldier beetles, spiders, hoverflies, ladybirds, parasitic wasps and dance flies) are known predators of common farmland pests including wireworms, leatherjackets, wheat bulb fly, orange wheat blossom midge, gout fly and frit fly
- Pitfall trapping for ground dwelling species within the crop and within flowering habitats
- Yellow sticky traps for aphids, natural enemies and BYDV presence within the crop
- Visual assessments of above ground arthropods
- Moth buckets as an indicator of a healthy ecosystem
The group met in February to discuss the trial protocols. Key questions regarding the impact flowering margins/strips have on pest control include:
• Is there a difference between conventional and organic sites?
• Can we quantify the impact of flowering mixes on pest control (and can this be linked to reduced insecticide use across varying soil types)?
• Is there an impact of establishment technique?
• Do regenerative practices increase the distance beneficials travel into the crop?
The farmers main pest pressures are Cabbage stem flea beetle, Bruchid beetle, Bird cherry oat aphid, slugs and crows. Main weed concerns are brome, blackgrass, foxtail fescue, bindweed, poppies, mayweed and fat hen.
TRIAL PROTOCOL CONSIDERATIONS:
Treatments:
Assessments:
Flowering mixes:
COMMUNICATION:
Group members will communicate via a WhatsApp group throughout the trial. AHDB will provide a record sheet for each assessment timing and send reminder email for assessments and sending traps. There will also be an online meeting when the protocol has been finalised to train those doing assessments.
1st July 2021
1st October 2021
November 2021
April 2022
Mid may 2022
June 2022
July 2022
AHDB Cereals & Oilseeds
Having gained a bachelor’s degree in genetics in 2017 and more recently a masters in bioscience abroad in Saudi Arabia, Matthew’s studies have focused around plant genetics and microbiology and after several laboratory positions he joined AHDB as a Knowledge Transfer Officer for Cereal and Oilseeds in November 2021.
North Yorkshire
Newcastle University Farms
Near Newcastle
Birkdale Farm
North Yorkshire
near Northallerton in North Yorkshire
Approach Farm
south of York
East Coast near Hornsea
Newcastle University
Newcastle
The full results from the flowering margins field lab can be found below. In summary:
